CN212160444U

CN212160444U - On-vehicle diagnostic system OBD terminal

Info

Publication number: CN212160444U
Application number: CN202020830654.8U
Authority: CN
Inventors: 龚志勇; 漆熙
Original assignee: China Mobile Communications Group Co Ltd; China Mobile IoT Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile IoT Co Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-12-15
Anticipated expiration: 2030-05-18

Abstract

An embodiment of the utility model provides an on-vehicle diagnostic system OBD terminal, include: the power interface is connected with an OBD interface of a vehicle-mounted diagnosis system of the automobile; and the hardware low-voltage self-turn-off module is connected with the power interface, and detects that the automobile battery passes through when the voltage input by the power interface is reduced to a set threshold value, the OBD terminal is turned off automatically. The utility model discloses a scheme reaches the low pressure of settlement after the turn-off threshold value when the level voltage who detects the car, from turning off whole OBD terminal, no longer consumes the electric quantity of car storage battery, waits to acquire the car next time and starts.

Description

On-vehicle diagnostic system OBD terminal

Technical Field

The utility model relates to a low-power consumption vehicle-mounted intelligent detector technical field especially indicates a vehicle-mounted diagnostic system OBD terminal.

Background

With the increasing of vehicle holding capacity and the popularization of the technology of internet of things, people have stronger and stronger requirements on vehicle intelligent technology, a vehicle OBD (on-board diagnostics) terminal is widely applied to automobiles as intelligent equipment for diagnosing and predicting fault occurrence, and due to the size limitation of OBD, the current OBD terminal usually adopts local storage or wireless data transmission in an NB-IoT (narrow-band internet of things) mode; because the vehicle OBD equipment is powered by the automobile battery, the consumption of the automobile battery is very large due to the long-time operation of the OBD terminal, so that the application of low-power consumption processing on the automobile OBD terminal is indispensable, and the current low-power consumption processing generally adopts software to detect voltage and control a communication module to continuously sleep;

the risk of signal interruption can be avoided through the vehicle OBD terminal of local data storage but local storage causes data reading untimely, the prediction trouble is difficult, and the vehicle OBD terminal through NB-IOT mode has NB signal coverage weak, the risk of data transmission instability, and these two kinds of OBD terminals all detect automobile state and battery voltage through software and control OBD's communication module and carry out dormancy or normal data transmission, this processing mode can prolong OBD's operating time, but also can have several mA's continuous discharge in the dormancy, if the car does not use for a long time, the OBD terminal can exhaust the electric quantity of car battery and cause the battery damage, make the car not start.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an on-vehicle diagnostic system OBD terminal, after the level voltage who detects the car reaches the low pressure of settlement from turn-off threshold value, from turning off whole OBD terminal, no longer consume the electric quantity of car storage battery, wait to acquire the car and start next time.

In order to solve the technical problem, the technical scheme of the utility model as follows:

an on-board diagnostic (OBD) terminal, comprising:

the power interface is connected with an OBD interface of a vehicle-mounted diagnosis system of the automobile;

and the hardware low-voltage self-turn-off module is connected with the power interface, and detects that the automobile battery passes through when the voltage input by the power interface is reduced to a set threshold value, the OBD terminal is turned off automatically.

Optionally, the on-board diagnostic system OBD terminal further includes: the main controller and the power supply module are connected with the hardware low-voltage self-turn-off module; the first communication module is connected with the power supply module;

the power module supplies power to the main controller and the first communication module respectively, and the main controller controls the power module to turn on or turn off the power supply of the first communication module according to a certain time interval after the automobile is shut down.

Optionally, the first communication module is a long term evolution LTE communication module.

Optionally, the on-board diagnostic system OBD terminal further includes: and the positioning module is connected with the first communication module and sends the positioning data to a background for display through the first communication module.

Optionally, the on-board diagnostic system OBD terminal further includes: and the sensor is connected with the main controller and used for controlling and monitoring the motion of the whole vehicle and waking up the vehicle by vibration.

Optionally, the on-board diagnostic system OBD terminal further includes: and the second communication module is connected with the main controller, communicates with the whole vehicle, receives the state data of the whole vehicle and sends the state data to the main controller.

Optionally, the second communication module is a controller area network CAN communication module.

The above technical scheme of the utility model at least include following beneficial effect:

above-mentioned scheme of the utility model, on-vehicle diagnostic system OBD terminal includes: the power interface is connected with an OBD interface of a vehicle-mounted diagnosis system of the automobile; and the hardware low-voltage self-turn-off module is connected with the power interface, and detects that the automobile battery passes through when the voltage input by the power interface is reduced to a set threshold value, the OBD terminal is turned off automatically. The electric quantity of the automobile storage battery is not consumed any more, and the automobile is waited to be started and started next time.

Drawings

Fig. 1 is the utility model discloses an on-vehicle diagnostic system OBD terminal's framework schematic diagram.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1, an embodiment of the utility model provides an on-vehicle diagnostic system OBD terminal, include: the power interface 1 is connected with an OBD interface of a vehicle-mounted diagnosis system of an automobile; the power interface 1 is mainly used for being in butt joint with an automobile OBD interface to carry out power supply input and normal CAN communication;

and the hardware low voltage self-turn-off module 2 is connected with the power interface 1, and when the hardware low voltage self-turn-off module 2 detects that the voltage of the automobile battery is reduced to a set threshold value, the OBD terminal is turned off automatically. The hardware low-voltage self-turn-off module 2 controls the total input voltage, when the battery reaches a set low-voltage threshold value, the total power supply of the OBD terminal is automatically turned off, the battery load is completely cut off, and over-discharge is prevented.

The on-board diagnostic system OBD terminal may further include: the main controller 6 and the power module 3 are connected with the hardware low-voltage self-turn-off module 2; a first communication module 5 connected to the power module 3; optionally, the first communication module 5 is a long term evolution LTE communication module. The power module 3 supplies power to a main controller 6 (micro power consumption main control MCU module) and an LTE communication module respectively.

The power module 3 supplies power to the main controller 6 and the first communication module 5 respectively, and the main controller 6 controls the power module 3 to turn on or turn off the power supply of the first communication module 5 according to a certain time interval after the automobile is shut down. The main controller 6 controls whether the power module 3 supplies power to the first communication module 5 or not, so that the effect that the LTE communication module works discontinuously completely when the automobile is not started is achieved.

The utility model discloses an in an optional embodiment, on-vehicle diagnostic system OBD terminal can also include: and the positioning module 4 is connected with the first communication module 5, and the positioning module 4 sends the positioning data to a background for display through the first communication module 5. The positioning module 4 may specifically be a GPS positioning module, and is configured to perform real-time positioning on the position of the entire vehicle, and transmit the positioning data to the background through the first communication module 5 for display. The first communication module 5 is used for communicating with the main controller 6 and the positioning module 4 and sending data to the background.

The utility model discloses an in an optional embodiment, on-vehicle diagnostic system OBD terminal can also include: and the sensor 7 is connected with the main controller 6 and used for controlling and monitoring the motion of the whole vehicle and waking up by vibration. The sensor 7 here may be a motion sensor.

The utility model discloses an in an optional embodiment, on-vehicle diagnostic system OBD terminal still includes: and the second communication module 8 is connected with the main controller 6, and the second communication module 8 is communicated with the whole vehicle, receives the state data of the whole vehicle and sends the state data to the main controller 6. Optionally, the second communication module 8 is a controller area network CAN communication module. The main controller 6 is communicated with the sensor 7 and the second communication module 8 in a whole vehicle and processes the LTE communication module in a low power consumption way; the sensor 7 is used for controlling and monitoring the motion of the whole vehicle to perform vibration waking; the second communication module 8 is used for communicating with the whole vehicle and receiving the state data of the whole vehicle to the main controller 6.

The above embodiment of the utility model, the concrete realization flow at OBD terminal is: the automobile battery is accessed into the system through the power interface 1, then is input into the power module 3 through the hardware low-voltage self-turn-off module 2, two paths of output power are generated, one path is directly input into the main controller 6, the other path is controlled by the main controller 6 to supply power to the first communication module 5, and when the second communication module 8 or the sensor 7 awakens the main controller 6 to enter a normal working state (mode 1), the power module 3 is controlled to enable the first communication module 5 and the positioning module 4 to work; when the automobile is shut down, the main controller 6 enters an ultra-low power consumption mode, and the power supply of the first communication module 5 is turned on and off at certain time intervals (mode 2); when the voltage of the automobile battery is detected to be reduced to a set threshold value, the hardware low-voltage self-turn-off module 2 completely cuts off the battery load to prevent over-discharge (mode 3); when the voltage of the battery is recovered, the power supply of the hardware low-voltage self-shutdown module 2 is recovered, and the equipment restarts to work normally.

The above embodiment of the utility model, supply power through main control unit 6 control LTE communication module, replace LTE's software dormancy, reduce the system consumption. Adopt sensor 7, CAN communication module and the multiple mode of car signal of striking sparks to shift and wake up little consumption master control MCU, guarantee the promptness of OBD terminal work. A hardware low-voltage self-turn-off module 2 is added, the use state of an automobile battery is obtained through communication between a CAN interface and the whole automobile, an optimal low-voltage turn-off threshold value is calculated and flexibly set through software, and the low-voltage self-turn-off threshold value is reduced under the condition that the battery is newer; the method comprises the steps of raising a low-voltage self-turn-off threshold under the condition that a storage battery is old, automatically turning off the whole OBD terminal after detecting that the level voltage reaches a set low-voltage turn-off threshold, avoiding consuming the electric quantity of the automobile storage battery, and waiting for obtaining the next start-up of the automobile and starting.

The utility model discloses an above-mentioned LTE low-power consumption vehicle OBD terminal of self-imposed absolutely in area, the long-range wireless data transmission who carries out whole car data through the LTE network has signal coverage extensively, signal quality is good, characteristics such as signal stability, carry out low-power consumption simultaneously and handle, adopt little consumption treater to do the master control, adopt the mode of being interrupted dormancy to regularly force to cut and open LTE network power supply and make OBD terminal dormancy consumption reach the uA rank when the car does not start, this OBD terminal carries out data communication through CAN and vehicle control unit at car operation in-process, acquire the battery state of current car storage battery, software calculation sets for the optimal low pressure self-imposed threshold value, after detecting level voltage and reaching the low pressure self-imposed threshold value of setting for, self-imposed whole OBD terminal, no longer consume the electric quantity of car storage battery, wait to acquire the car next time start and start.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An on-board diagnostic (OBD) terminal, comprising:

the power interface (1) is connected with an OBD interface of an on-board diagnosis system of the automobile;

with hardware low pressure that power source (1) is connected is from shutting off module (2), the hardware low pressure is from shutting off module (2) and is detected the car battery and pass through when the voltage of power source (1) input reduces to the settlement threshold value, from shutting off the OBD terminal.

2. The on-board diagnostics system, OBD, terminal of claim 1 further comprising: the main controller (6) and the power module (3) are connected with the hardware low-voltage self-turn-off module (2);

a first communication module (5) connected to the power module (3);

the power supply module (3) respectively supplies power to the main controller (6) and the first communication module (5), and the main controller (6) controls the power supply module (3) to be turned on or turned off according to a preset time interval after the automobile is turned off, so that the power supply of the first communication module (5) is realized.

3. The on-board diagnostics system OBD terminal according to claim 2 characterized in that the first communication module (5) is a long term evolution, LTE, communication module.

4. The on-board diagnostic system (OBD) terminal according to claim 2 or 3, further comprising: and the positioning module (4) is connected with the first communication module (5), and the positioning module (4) sends positioning data to a background for display through the first communication module (5).

5. The on-board diagnostics system, OBD, terminal of claim 4 further comprising: and the sensor (7) is connected with the main controller (6) and used for controlling and monitoring the motion of the whole vehicle to perform vibration waking.

6. The on-board diagnostics system, OBD, terminal of claim 5 further comprising: and the second communication module (8) is connected with the main controller (6), the second communication module (8) is communicated with the whole vehicle, receives the state data of the whole vehicle and sends the state data to the main controller (6).

7. The on-board diagnostics system OBD terminal according to claim 6 characterized in that the second communication module (8) is a controller area network, CAN, communication module.